Need advice, 2 tanks with different PH readings
I've 2 one feet tanks with different readings of ph.
Hi experts, need some advice.
I have 2 tanks with diff ph readings.
Tank 1 with ph 6.5, has 9 crs and 4 yellows. It has less than an inch high of soil, not sure what brand as my LFS gave it to me cos I requested for cycled soil.
It has a piece of large dw and 2 small dw.
Tank 2 at 1 feet with 6 rilis, more than an inch high of Gex soil, 1 medium piece of driftwood. Ph at 7. I just added another pice of dw, hopefully to lower a bit.
Tank one is more matured than tank 2.
The ph of my tap water is 8.
What causes the difference? Is it the dw?
I ordered some almond leaves, hopefully to lower ph of the tank with readings of 7. Or should I add more dw?